Unvented Gas-Fired Room Heater

InstallationPROVIDE ADEQUATE COMBUSTIONAND VENTILATION AIR This heater shall not be installed in a confined space orunusually tight construction unless provisions are providedfor adequate combustion and ventilation air. This heater must have fresh air for proper operation. If not,poor fuel combustion could result. Read the followinginstructions to insure proper fresh air for this and other fuelburning appliances in your home.Modern construction standards have resulted in homes thatare highly energy efficient and that allow little heat loss.However, your home needs to breathe and all fuel burningappliances need fresh air to function properly and safely.Exhaust fans, clothes dryer, fireplaces and other fuel burningappliances all use the air inside the building. If the availablefresh air supply is insufficient to meet the demands of theseappliances, problems can result.Confined Space:The National fuel Gas Code, ANSI Z223.1 / NFPA 54 defines aconfined space as a space whose volume is less than 50cubic feet per 1000 BTU per hour (4.8 m3 per kw) of theaggregate input rating of all appliances installed in that space.Unconfined Space:An unconfined space is defined in the same standards as aspace whose volume is not less than 50 cubic feet per 1000BTU per hour (4.8 m3 per kw) of the aggregate input rating ofall appliances installed in that space. Rooms communicatingdirectly with the space in which the appliances are installed,through openings not furnished with doors, are considered apart of the unconfined space.Example:10,000 BTU Legacy heater should only be installed in a roomwhose volume is more than 500 cubic feet. A room that is 8'x 8' x 8' (512 cubic feet) would be acceptable for a Legacy10,000 BTU/hour heater.If an additional fuel fired appliance is installed in the sameroom, the input rating of that appliance should be added tothat of the Legacy heater to determine the minimum sizedroom that should be serviced by both appliances.Unusually tight construction is defined as constructionwhere:a) Walls and ceilings exposed to the outside atmosphere have acontinuous water vapour retarder with a rating of 1 perm (6 x10-11 kg per pa-sec-m2) or less with openings gasketed orsealed;b) Weather stripping has been added on openable windows anddoors; andc) Caulking or sealants are applied to areas such as jointsaround window and door frames, between sole plates andfloors, between wall-ceiling joints, between wall panels, atpenetrations for plumbing, electrical and gas lines and atother openings.4WARNING: If the area in which the heater may be operated issmaller that that defined as an unconfined space or if thebuilding is of unusually tight construction, provide adequatecombustion and ventilation air by one of the methodsdescribed in the National fuel Gas code, ANSI Z223.1 / NFPA54, Section 5.3 or applicable local codes.GAS TYPEVerify the type of gas supply to be used, either natural gas orLP (Propane), and make sure the marking on the appliancerating plate agrees with that of the supply gas. The rating plateis located on the side of the heater, which indicates the type ofgas the heater is manufactured for.WARNING: This appliance is only for use with the type of gasindicated on the rating plate.This appliance is not convertible for use with other gases.ITEMS NEEDED FORHEATER INSTALLATIONBefore installing the heater, make sure you have these items: Gas piping (check local codes) Test gauge connection Sealant (resistant to LP gases) - approved threadcompound Manual shut-off valve* Sediment trap - where required Ground joint union Tee joint and pipe wrench*An installer supplied design-certified manual shut-off valvewith 1/8 NPT tap connection.

LOCATING THE HEATER Due to high temperatures, the appliance should be located outof traffic and away from furniture and draperies. Keep flammable objects more than 36” from the front and top of theheaters and more than 10” from the sides of the heater. Provide adequate clearances for accessibility for purposes ofservicing the heater. Maintain adequate clearances around the air openings toallow for proper and safe operation of the heater. WARNING: Do not allow fans to blow directly into the heater.Avoid any drafts that alter the burner flame patterns.This heater is designed to be mounted on a wall or on the floor.WARNING: Never install the heater; in a bathroom* in a recreational vehicle where curtains, furniture, clothing or other flammable areless than 36” from the front, top or sides of the heater as a fireplace insert in high traffic areas in windy or drafty areas*Models RMC-L106NG or LP Permitted for bathroom installation.WARNING: Vent-free heaters add moisture to the air. Althoughthis is beneficial, installing heater in rooms without enoughventilation may cause mildew formation from too muchmoisture content. See National Fuel Code for Fresh Air forCombustion and Ventilation.This appliance may be installed in an aftermarket, permanentlylocated manufactured (mobile) home, were not prohibited bystate or local codes.Caution: If you install the heater in a home garage: Heater must be at least 18” above floor Locate heater where moving vehicle will not hit it. Install to ANSI Z223.2 / NFPA 54 using fixed gas supply piping.Fig. 2 Minimum clearances from mounting holes to top surface of flooring,adjacent walls and ceilingATTACH MOUNTING SCREWS TO WALLNOTE: Wall anchors and mounting screws are in hardwarepackage provided with heater.1. Install mounting screws on wall as shown in Figure 3. Useenclosed paper template for proper location of holes. Besure template is level. It may be necessary to use plastic orlead anchors for plaster walls.2. Drill holes at marked location using 9/64” drill bit.Insert mounting screws.3. Leave screw head out from wall far enough to attachheater.PREPARING FOR INSTALLATION1. Remove heater from carton2. Remove all protective packaging applied to heaterfor shipment.3. Check heater for any shipping damage. If heater isdamaged, promptly inform dealer/distributor.4. Select a location for the heater that will provide maximumexposure of the radiant surface to the room, but will not besubjected to accidental contact.5. Adequate clearance must be available around the air opening. Refer to Figure 2 for clearances that must be maintained to the side walls, floor and horizontal surface surrounding the heater.Fig. 3 Use paper template supplied to mark location of mounting holes.Be sure template is level.5

WALL ANCHOR METHODFLOOR INSTALLATIONWhen mounting heater to hollow walls (wall areas betweenstuds) or solid walls (concrete or masonry) it may be necessary to use wall anchors.1. Place paper template on wall maintaining minimum clearance. Be sure template is level.2. Drill holes at marked locations using 5/16”drill bit.For solid walls, concrete or masonry, drill holes at least1”deep.3. Insert plastic anchor. Tap anchor flush to wall. (Fig. 4)4. Insert screw into wall anchor leaving screw head out farenough to attach heater. (Fig. 4)5. Hang heater on mounting screws in holes provided at therear of the heater.1. Heater may only be installed on a noncombustible flatsurface. Where the flooring is carpeting, tile or of othercombustible material other than wood flooring, maintain theminimum clearances to the floor as shown in figure 2 orelse use a metal or wood panel (not supplied) extending thefull width and depth of the appliance.2. Measure heater mounting screw location “X” as desiredabove floor. (Fig. 5)3. Use enclosed “paper template” for proper distance betweenholes. Be sure template is level. It maybe necessary to useplastic or lead anchors for plaster walls.4. Leave screw head out from wall far enough to attach heater.x 173/4" 45 CM 30,000 BTU/hr units161/2" 42 CM 18 & 20,000 BTU/hr units141/4" 36 CM 6 & 10,000 BTU/hr unitsFig. 5 Optional wall mounting screws for floor installation.Fig. 4 Wall anchor.6

CONNECT TO GAS SUPPLYInstallation should be done by a qualified service person.Before connecting the appliance, turn off all gas appliances.Close the main gas valve at the gas meter or LP tank. Makecertain there is good ventilation where the installation will bemade. Installation should comply with all applicable buildingcodes and ANSI Z223.1, latest edition. Use PLP gas resistantpipe compound to seal threaded joints.An installer supplied, design certified gas pressureregulator must be installed to bring the gas supply pressuredown to 14" w.c. for LP gas or 11" for natural gas.PRESSURE TEST GAS SUPPLYPIPING SYSTEMThe appliance and its individual shut off (control) valve mustbe disconnected from the gas supply piping system during anypressure testing of the system at test pressure in excess of1/2 psi (3.5 kPa).The appliance must be isolated from the gas supply pipingsystem by closing the individual manual shut-off valve (fig. 7)during any pressure testing of the gas supply system at testpressure equal to or less than 1/2 psi (3.5 kPa).WARNING: Never connect an unregulated gas line to theheater.IMPORTANT: Check gas line pressure before connecting heaterto gas line. Gas line pressure must not be higher higher than14" w.c. for LP gas or 11" for natural gas.NOTE: The gas line connection can be made with 3/8”black orsteel pipe. Internally tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of large enoughdiameter to allow proper gas volume to heater. If pipe is toosmall, undue pressure loss will occur.CAUTION: Use pipe joint sealant that is resistant to liquefiedpetroleum gases. Install sediment trap in supply as shown inFigure 6.Locate sediment trap where it is within reach for cleaning.Locate sediment trap where matter is not likely to freeze. Asediment trap prevents moisture and contaminant's from goinginto the heater controls. If the sediment trap is not installed or isinstalled wrong, the heater may not operate properly.Test for gas leaks with a mild soap and water solution. Applywater/soap solution with brush only - do not over apply.NEVER test with an open flame.Fig. 7 Manual shut-off valve location.LEAK TESTING HEATERGAS CONNECTION1. Make sure control knob of heater is in the OFF position.2. Open manual shut-off valve.3. Open main gas valve located near gas meter.4. check all joints from manual gas valve up to control valveand including the manifold assembly. Apply the soap solutionaround the connections, valve and tubing. Soap bubbles willappear where a leak is present.5. If a leak is present, immediately turn off gas supply, tightenany leaky fittings, turn gas on and recheck.6. To check burner and safety valve, the burner must be lit. (SeeOperating Instructions) Check the rest of the connections forleaks.7. Turn off the heater prior to making any gas connectionrepai

This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is installed. Provisions for adequate combustion and ventilation air must be provided. Refer to the Installation section on page 3. Unvented Gas-Fired Room Heater Blue Flame Heaters Models: RMC-LC10NG, RM